It???s possible to overcome this by eating more fibre, says Ms Hanna.CHEWING GUM When you chew gum you swallow more air, which increases the risk of bloating, says Peter Whorwell, a professor of medicine at Wythenshawe Hospital in Manchester, and a leading authority on irritable bowel syndrome.???Sugar-free versions are worse as they contain ingredients such as sorbitol and xylitol which are ferme